Valve for aerosol container



Jan. 17, 1961 P. MESHBERG VALVE FOR AERosor. CONTAINER Filed June 28,1955 INVENTOR. Mesze/:y

@Ml M) ATTOR/VEYJ United States Patent VALVE FOR AEROSOL CONTAINERPhilip Meshberg, 290 Euclid Ave., Fairfield, Conn. Filed June 28, 1955,Ser. No. 518,535

1 3 Claims. (Cl. 222-394) The present invention relates to valves foraerosol containers.

It is an object of the present invention to provide a valve for anaerosol container which is simple of construction, easy to assemble andinexpensive to manufacture.

Another object of the invention is to provide a valve construction whichcan be readily adapted for dispensing measured or unmeasured charges.

It is a still further object of the invention to provide a valve whichis quick acting and which is sure in operation under all operatingconditions.

In carrying out the invention the valve stem is slidably carried by avalve housing and has a valve disk cooperating with the valve stem tonormally control the dispensing of the fluid and may be provided with asecond valve in spaced relation to the first valve for controlling themeasured charge.

A feature of the invention resides in the novel valve disk and the domedtop which cooperate to provide a valve stem which has a substantiallylong stroke before the dispensing operation occurs which is anadvantage, particularly where a measured valve is concerned, for itenables the cut off to be made prior to the dispensing of the materialeven though variances of manufacturing of the stern or swelling of thesealing disk may occur.

Another feature of the invention resides in the dishshaped valve disk inthat it is gripped adjacent its periphery so that it has a long flexingkmovement and is tensioned during the movement to assist the usualspring in returning the valve stem to sealing relation.

Another feature of the invention resides in the fact that thedome-,shaped end portion provides space to accommodate any swelling inthe valve disk as may occur when perfumes and the like are used `whichwithout 'having swelling interfere with the operation of the valve.

Another feature of the invention resides in the novel cut offconstruction for measuring the fluid to Vbe dispensed which comprisesmerely a resilient washer which is floatingly carried by the housing andnormally pressed into `sealing relation with the housing by the usualspring urging the stem to extended position and which `is alsocompressed by the pressure of the spring to closely engage the stem toperform the cut off operation, which pressure against the stem isincreased as the stern is moved against the urging means into dispensingposition.

Another feature of the invention resides in the pro.- .vision o f meanswhereby the container can be pressure filled with great ease` Otherfeatures and advantages of the invention will be apparent from thespecification and claims when conf sidered in connection with thedrawings in which:

Figure 1 shows the valve of the present invention in normal position.

Fig. 2 shows the valve in dispensed position.

Fig. 3 shows the valve in pressure lling position.

Fig. 4 shows another form of valve stern.

2,968,427 Patented Jan. 17, 1961 n ICC The invention as shown in thedrawings is appliedto a valve for dispensingV measured quantities ofaerosol or fluid material under pressure and is particularly useful indispensing cosmetics or the like material where limited quantities arerequired.

As shown in Fig. 1, an aerosol container 10 has a valve housing 11mounted therein and, while the housing may be made of any suitableimpervious material it is at present preferred to form it of a sheetmetal stamping or drawn piece of tubular construction having an aperture12 in inner wall 11a forming one end of the measuring chamber, and anenlarged mouth 13 at the other end adapted to receive a sealing gasketand a valve disk 14 of suitable resilient sealing material.`

In the illustrated form of the invention the enlarged mouth is formed byproviding the housing with a lateral flange 15 having on its periphery acylindrical peripheral wall 16 forming, in effect, a cup into which thedisk 14 can be inserted.

Although the housing may be mounted in any suitable way, in theillustrated form of the invention the mounting means is formed on thetop 10a of the container by providing it with a projecting neck 17having a transverse wall 18 extending thereacross so that the valvehousing can be inserted into the neck and is held in position by havingthe walls of the neck crimped at 17a under the wall to clamp it, asshown, between the transverse wall 18 closing the neck and the crimpedportion. The transverse wall is crimped inwardly at 18a so that it gripsthe periphery of the valve disk 14 and clamps it against the ange 15 tosecure the disk in position. The peripheral wall, therefore, not onlyserves to locate and mount the housing on the container but alsoeffectively controls the gripping action of the transverse wall on theedge of the valve disk.

As shown in the drawings, the valve disk is made of resilient liexiblematerial such as rubber, synthetic rubber compounds or flexible plasticmaterials and is provided with a bore 14a through which a valve stem 19projects, the bore being aligned with a central aperture 20 in thetransverse wall 18. The valve stem is preferably formed as a unitarymember and, while it may be molded of plastic or made as a hollow memberon an eyelet machine, it is at present preferred to form it as a solidmember by means of a header or screw machine. As shown, it is providedwith an outer portion 21 passing through the bore 14a in the valve diskso as to project through the aligned aperture 20 in the transverse wallportion of the mounting means to the exterior of the container. The boreof the disk is of such a diameter that it frictionally engages the outerportion 21 and provide/s a seal therewith, yet readily permits it to belongitudinally moved therethrough from the sealing position of Fig. 1 tothe discharge position of Fig. 2.

If desired, that part of the outer portion which normally engages thebore of the disk in the position of Fig. 1 may be slightly reduced indiameter, as shown at 22, and joined with the remainder of the outerportion by a portion .having a large radius of curvature as shown at 23.This reduced portion tends to locate the stem Vand disk in normalposition and the curved portion permits the stem to coact with the diskin moving to 4the position of Fig. 3 without any damage to the bore Iinthe disk and enables the disk to return to the position of Fig. l toproperly correlate the disk and stem.

At the inner end of the outer portion 21 of the valve stern there isprovided an enlarged section or collar 24 adapted to extend outwardlyfrom the stem so as to enf Vgage the undersurface of the valve disk.Preferably, the collar is of a dimension larger than the aperture 20 inthe transverse wall so that as the valve is held in sealing posi tionthe valve disk will be clamped between the collar and any suitablemeans.

.container as shown in Fig. 1. longitudinal passage connects with asecond lateral pasvis normally dished, as shown in Fig. 1.

v the transverse wall portion to produce a second seal for the device.The inner portion 25 of the stem located below the collar passes throughthe aperture 12 in the inner wall 11a of the housing. The valve stem,'soposi- `rtioned, will be guided adjacent each end by the aperture`restrict it to substantially longitudinal movement so that there can beno leakage between the walls of the bore in the disk and the cylindricalportion.

The valve stem is urged to normal sealing position by position and thecollar into sealing relation.

As shown in the drawings, the upper end of the stem yhas mounted thereonan actuating button 27 so as to be lan extension thereof.

-end of the passage 28 there is provided an inner lateral passage 29extending through the wall of the stem, which lateral passage isnormally located on the exterior of the The upper end of the sage 30formed in the button so as to communicate with -recess 31 and whichforms the discharge aperture or noz- .zle for the device.

As shown in Fig. 2, the bottom 27b of the button engages the top of thetransverse wall and forms a stop for the valve stem in the dischargeposition with the inner lateral passage 29 in communication with theinterior of the valve housing so that fluid under pressure in the valvehousing will pass therefrom through the lateral passage 29 to thelongitudinal passage 28 to the outer lateral dispensing passage 30.

In accordance with the preferred form of the invention the transverseend wall 18 is dome-shaped and the washer This provides a substantialadvantage in that as the stem is moved from the position of Fig. 1 tothe position of Fig. 2 it will -cause the center of the disk to bedeflected inwardly to assume the position as shown in Fig. 2. It will beseen that this permits a substantial movement on the part of the Astemfrom normal sealing position to dispensing position which, as will beexplained later, is of importance in metering valves. Furthermore, thisprovides sufiicient space to permit swelling of the sealing disk by thecontents without adversely affecting the operation of the valve. Withthe center displaced as shown in Fig. 2, the tendency for the sealingdisk to return to normal position will assist the spring 26 in quicklymoving the valve to sealing position upon the release of the button.

In order to dispense measured amounts of fluid under pressure inaccordance with the present invention, a second valve means 32 isprovided for sealing off the housing from the interior of the containerso as to trap a predetermined quantity of material therein prior to themovement of the inner passage 29 into communication with the valvehousing. While this may take many forms, in the illustrated form of theinvention a resilient washer 33 which is of less diameter than of thehousing is floatingly positioned in the bottom of the housing betweenthe spring 26 and wall 11a so as to overlie the wall 11a and has a bore`33a through which the inner portion 25 of the stem extends. A bearingwasher 34 overlies the washer 33 and transmits the pressure from thespring 26 thereto, which pressure maintains the resilient washer 33 insealing relation with the wall 11a and also distorts the bore 33a togrip the stem 25 and form a seal therewith which sealing pressure isincreased as the spring is compressed during movement of the stem fromthe position of Fig. l to that of Fig. 2 so that a maximum sealing ofthe housing from the container during the dispensing period is obtained.

In the herein illustrated form of the .invention a spring 26 ispositioned within the housing so ,as to press against the collar to urgethe stem to projected By usingthis floating washer construction thesecond valve means can center itself and close tolerances respecting thewasher and housing are not required. The inner portion 25 is providedwith a passage 35 extending inwardly from the end of the stem andlaterally at 35a so as to connect the container to the housing when innormal position of Fig. 1. When the stem is moved longitudinallyinwardly the passage 35a moves past washer 33 and the washer will engagethe inner portion of the stem and seal the interior of the housing fromthe container prior to the movement of the inner lateral passage 29 ofthe outer portion of the stem into .communication with the valvehousing. Thus, only the aerosol material which is trapped in the valvehousing will be dispensed for each operation of the valve. As will benoted in Fig. 2, the button will stop the stem in this position toinsure the proper location of the sec ond valve means during thedispensing operation.

It will be seen from the foregoing that by the use of the dome top,which permits a long stroke of the valve stem before discharge, thelocation of the passage 35a is vnot as critical as might be requiredsince it will insure movement Aof the passage 35a to the position ofFig. 2 even though manufacturing variations might cause the passage tobe at a slightly different distance from the end of the stem.Furthermore, this construction enables the passage 35a to be locatedsufficiently above the washer 33 to insure communication of the housingwith the container in the position of Fig. l even though the valve disk14 may become swollen to some degree since there is suicient leeway, asfar as stroke is concerned, so that it will not interfere with thisrelationship.

Under some circumstances, it is desired to pressure fill the aerosolcontainer. This can be accomplished by the present invention byproviding a by-pass around the sccond valve means. In the illustratedform of the invention this is accomplished by providing a by-passpassage 36 on the inner portion 25 located inwardly from the inner endof the stem a predetermined distance so that it will be disposed in thebore 33a and by-pass the washer 33 when the spring is fully compressedand the valve stem is in position as shown in Fig. 3. Thus it will beseen that by moving the valve stem to the position shown in Fig. 3,prior to the application of the actuating button 27, and connecting acharging nozzle A to passage 28, the container can be readily charged byforcing the aerosol material under pressure through the longitudinalpassage 26 of the stem, through the inner lateral passage 29, along thehousing and through the by-pass passage 36 to the interior of thecontainer. Also, the aerosol forced under pressure will cause the edgesof the disk 14 around the bore 14a to deliect inwardly and permitpassage of the aerosol into the housing, thus greatly facilitating thepressure filling of the container. As soon as the container is charged,the stem is returned to the position of Fig. 1 and the button appliedthereto.

A feature of the invention resides in the fact that the present valveincludes a minimum of parts and is readily adaptable for use either as ametered valve or as an unmetered valve. When it is desired to use thedevice as an unmetered valve, it is merely necessary to omit theinclusion of the washers 33, 34 which form the second seal. Thus it willbe seen that a tremendous saving in inventory of parts can be made.

In the form of the invention shown in Fig. 4 the passages on the stemare. formed by providing iiats on the stem, the flat 37 in the upperpart of the stem cooperat. ing with the button forming the equivalent ofpassages 28, 29 and 30, the at 38 in the inner end of the stem formingthe equivalent of passages 35, 35a and the flat 39 located inwardly fromthe inner end of the stem producing the equivalent of the by-passpassage 36. Under some conditions of manufacture it may be easier toform the passages in this manner rather than in the manner shown in theform of Figs. 1 to 3.

By utilizing housings of different diameters, the volume -'f'x themeasuring chamber can be accurately'eontrolled to the desired amountwithoutin any way changing the construction and arrangement of any ofthe other interchangeable parts of the valve. This may be seen from thehousing shown in Fig. 4 which has a greater volume than that in Figs. 1to 3.

Ifv desired, in all forms of the invention, a sphon tube 40 may beconnected to the housing to extend to the bottom of the container in theusual manner.

Variations and modifications may be made within the scope of the claimsand portions of the improvements may be used without others.

I claim:

1. Valve means for controlling the discharge of a measured amount offluid under pressure from a container comprising a tubular valve housinghaving a transf verse apertured wall extending thereacross to form `oneend of a measuring chamber, and having a laterally proiecting ange atthe other end provided with a peripheral wall; an outwardly dishedresilient valve disk having a central bore therein disposed within theperipheral wall; means mounting the housing on the container includingan outwardly domed portion extending over the valve disk and having anindented portion clamping the disk to the flange adajcent the peripherythereof whereby the center is free to ex; a valve stem mounted in saidhousing for movement between a normal sealing position and a normaldischarge position and having a portion at the outer end thereofextending through said bore in the valve disk and the domed portionextending thereover and projecting beyond the container, said sternhaving a sealing portion cooperating with the disk in normal sealingposition to prevent passage of the fluid from the container and aportion at the inner end passing through the apertured wall of thehousing to guide the stem against tilting; and spring means on thehousing urging the stem into sealing relation with the disk, manualmovement of said stem inwardly against the spring means a predetermineddistance from normal sealing position to normal discharge positioncausing the valve disk to flex inwardly and out of sealing relation withthe stem to permit passage of lluid from said housing, said domed wallproviding space for permissive swelling of the valve disk and said exedvalve disk aiding the return of the stem to sealing relation.

l2. Valve means for controlling the discharge of 'a measured amount offluid under pressure from a container comprising a tubular valve housinghaving a transverse apertured wall extending thereacross to form ameasuring chamber; a resilient valve disk having a centrally disposedbore therein disposed across the end of the housing; means mounting thehousing on the container, said disk being gripped adjacent the peripherythereof whereby the center is free to ex; a valve stem mounted in saidhousing and having a portion at the outer end thereof extending throughsaid borein the valve disk and projecting beyond the container, saidstem having a sealing portion cooperating with the disk to npreventpassage of the fluid from the container and a portion at the inner endpassing through the apertured yWall of the housing to guide the stemagainst tilting; and resilient means urging the stem into sealingrelation with the disk, manual movement of said stem against the urgingmeans a predetermined distance from normal sealing position causing thevalve disk to flex inwardly and out of sealing relation to permitpassage of fluid from said housing, said housing having a second valvemeans at the apertured wall and means on lthe -stem spaced'inwardly fromthe inner end thereof and controlled by inward movement of said valvestem to cooperate with the second valve means to seal the housing fromthe container prior to the movement of the tir-st valve means out ofsealing relation, thereby dispensing only the tiuid in the valvehousing, said flexed valve disk and said resilient means quicklyreturning the. stern to. normal sealing- PQsition upon release thereof.

3. Valve means for controlling the discharge of a measured amount ofliuid under pressure from a conf tainer compri-sing a tubular valvehousing having a trans, verse apertured wall xtending thereacross toforml one end of a measuring chamber and a resilient valve disk having abore mounted therein to seal the other yend of the chamber; meansmounting the housing on the container; a valve stem mounted in saidhousing and having a portion at the outer end thereof extending throughsaid bore in the valve disk and projecting beyondthe container, saidstem having a portion cooperating with the disk to control thedispensing of fluid from the charnber and a portion at the inner endpassing through the apertured wall of the housing to guide the sternagainst tilting; spring means within the housing urging the stern intonormal sealing relation with theV disk, said housing having afree-floating resilient washer disposed within the chamber and overlyingthe Yapertured wall, said washer having a bore through which the stempasses, said spring means applying pressure to the washerto cause saidwasher to be pressed into sealing relation with the wall and the boreinto sealing relation with the stern; and means on the stem extendinginwardly from the inner end thereof for connecting the chamber with theinterior of the container when the stem is in sealing relation to permituid from the container to till the chamber, Said means being moved intosealing relation with the washer to prevent fluid entering the chamber`from the ,container when the stem is moved inwardly to discharge fluidfrom the chamber.

4. Valve means for controlling the discharge of. a measured amount offluid under pressure from a container comprising a tubular valve housingon the container having a transverse Eapertured wall extendingthereacross to form a measuring chamber and a resilient valve diskmounted therein to seal the other end of the chamber; a valve sternmounted in said housing and having an outer portion cooperating with thedisk to control the dispensing of uid from the chamber and a portion atthe inner end passing through the apertured wall of the housing to guidethe stem against tilting; and spring means within the housing urging thestem outwardly to normal sealing position, said housing having afree-floating resilient washer disposed within the chamber and overlyingthe apertured wall, said washer having a bore through which the sternpasses, said spring means applying pressure to the washer to cause saidwasher to be pressed .into sealing relation with the wall and the boreof the washer into sealing relation with the stem, and means on the Stemextending inwardly from the inner end thereof for con necting thechamber with the interior of the container when the stem is in sealingpcsitionto permit uid from the container to lill the chamber, movementofthe stem inwardly a predetermined distance causing fluid to bedispensed from the chamber and the means on the stem to be moved intosealing relation with the washer to prevent fluid from entering thechamber from the container during the dispensing of iluid therefrom.

5. Valve means for controlling the discharge Vof a Huid under pressurefrom a container comprising a tubular valve housing having a transverseapertured wall extending thereacross; an outwardly dished resilientvalve disk having -a bore therein disposed across the end of the houseing; means mounting the housing on the container, said disk beinggripped adiacentthe periphery thereoflwhereby the center is freeto flexinwardly; a valve stem ymounted in said housing and having a portion atthe outer end thereof extending through said bore in the valve .disk andprojecting beyond the container, said stern having .a portion of reduceddiameter cooperating with the disk-in normal sealing position Vtoprevent passage ofthe fluid from the container; va discharge passagelocatedoutwardly of .said portion of reduced diameter and a portionatlthe inner end passing through the apertured wall of the housing toguide the stem against tilting; and resilient means urging the'stem'into' normal sealing relation with the disk, manual movement ofsaid stem against the resilient urging means a predetermined distancefrom normal sealing position causing the valve disk to ex inwardly andout of sealing relation and causing said discharge passage tocommunicate with said container to permit passage of uid from saidcontainer, said llexed valve disk and said resilient means quicklyreturning the stern to normal sealing position upon release thereof.

6. Valve means for controlling the discharge of a uid under pressurefrom a container comprising a tubular valve housing having a transverseapertured wall extending thereacross and having a laterally projectingflange at the other end provided with a peripheral wall; an outwardlydished resilient valve disk having a bore therein overlying thelaterally projecting ange; means mounting the housing on the container,the edge portion of said disk being gripped adjacent the peripheral wallwhereby the center is free to tlex inwardly; a valve stem mounted insaid housing and having a portion at the outer end thereof extendingthrough said bore in the valve disk and projecting beyond the container,said stem having a portion of vreduced diameter cooperating with thedisk in normal sealing position to prevent passage of the uid from thecontainer; a discharge passage normally located outwardly of the valvedisk and a portion at the inner end passing through the apertured wallof the housing to guide the stem against tilting; and resilient meansurging the stem into normal sealing relation with the disk, manualmovement of said stem against the resilient urging means a predetermineddistance from normal sealing position causing the valve disk to tiexinwardly and out of sealing relation and causing said discharge passageto communicate with said container to permit passage of Huid from saidcontainer, said llexed valve disk and said resilient means quicklyreturning the stem to normal sealing position upon release thereof.

7. Valve means for controlling the discharge of a measured amount ofHuid under pressure from a container comprising a tubular valve housinghaving a transverse apertured wall extending thereacross to form one endof a measuring chamber and having a laterally projecting ange at theother end provided with a peripheral wall; an outwardly dished resilientvalve disk having a central bore therein disposed within the peripheralwall; means mounting the housing on the container including an outwardlydomed portion extending over the valve disk and having an indentedportion clamping the dis-k to the ange adjacent the periphery thereofwhereby the center is free to llex; a valve stem mounted in said housingfor movement between a normal sealing position and a normal dischargeposition and having a portion at the outer end thereof extending throughsaid bore in the valve disk and the domed portion extending thereoverand projecting beyond the container, said stem having a sealing portioncooperating with the disk in normal sealing position to prevent passageof the fluid from the container and a portion at the inner en-d passingthrough the apertured wall of the housing to guide the stem againsttilting; spring means on the housing urging the stern into sealingrelation with the disk, manual movement of said stern inwardly againstthe spring means a predetermined distance from normal sealing positionto normal discharge position causing the valve disk to flex inwardly andoutof sealing relation with the disk to permit passage of lluid fromsaid housing, said housing having a free-floating resilient washerdisposed within the chamber and overlying'the apertured wall, saidwasher having a bore through which the stem passes, said spring meansapplying pressure to the washer to cause said washer to be pressed intosealing relation with the wall and the bore into sealing relation withthe stem; and means on the stern extending inwardly from the inner endthereof for connecting the chamber with the interior of the containerwhen the stem is in sealing relation to permit uid from the container totill the chamber, said means being moved into sealing relation with thewasher to prevent fluid entering the chamber from the container when thestern is moved inwardly to discharge uid from the chamber.

8. Valve means for controlling the discharge of a measured amount offluid under pressure from a container comprising a tubular valve housinghaving a transverse apertured wall extending thereacross to form one endof a measuring chamber and having a laterally projecting ange at theother end provided with a peripheral wall; an outwardly dished resilientvalve disk having a central bore therein disposed within the peripheralwall; means mounting the housing on the container including an outwardlydomed portion extending over the valve disk and having an indentedportion clamping the disk to the flange adjacent the periphery thereofwhereby the center is free to llex; a valve stem mounted in said housingfor movement between an outer normal sealing position, an intermediatenormal discharge position and an inner filling position, said stemhaving a portion at the outer end thereof extending through said bore inthe valve disk and the domed portion extending thereover and projectingbeyond the container and having a sealing portion cooperating with thedisk in normal sealing position to prevent passage of the uid from thecontainer and a portion at the inner end passing through the aperturedwall of the housing to guide the stern against tilting; spring means onthe housing urging the stem into sealing relation with the disk, manualmovement of said stern inwardly against the spring means a predetermineddistance from normal sealing position to normal discharge positioncausing the valve disk to flex inwardly and out of sealing relation withthe disk to permit passage of tluid from said housing, said housinghaving a free-floating resilient washer disposed within the chamber andoverlying the apertured wall, said washer having an aperture throughwhich the stem passes, said spring means applying pressure to the washerto cause said washer to be pressed into sealing relation with the walland the bore into sealing relation with the stem; and means on the stemextending inwardly from the inner end thereof for connecting thc chamberwith the interior of the container when the stem is in sealing relationto permit fluid from the container to lill the chamber, said means beingmoved into sealing relation with the washer to prevent uid entering thechamber from the container when the stem is moved inwardly to dischargefluid from the chamber, said stem having means thereon spaced from theinner end to permit passage of tluid past the washer when the stem is inthe inner position and lluid under pressure is applied to the outer endof the stem and valve disk to pressure ll the container.

9. Valve means for controlling the discharge of a measured amount offluid under pressure from a container comprising a tubular valve housinghaving an enlarged gasket-receiving mouth at one end thereof and atransverse apertured wall at the other end, a resilient valve diskhaving a central bore mounted in said enlarged mouth and securedadjacent the edge thereof whereby the center of the disk is free toflex; mounting means securing the valve housing to the container; avalve stem mounted in said housing and having a portion at one endextending through said bore to project beyond the container, a sealingportion cooperating with the disk to seal the container, and a portionof reduced diameter at the other end passing through the apertured wallof the housing; and spring means urging the stem into an outer positionin sealing relation with the disk, movement of said stem inwardlyagainst the urging means a predetermined distance from normal sealingposition to an intermediate normal discharge position causing saidsealing portion to be moved out of sealing relation and to permitdischarge of the uid therethrough from the housing, said housing havinga second valve means adjacent the apertured wall controlled by movementof said valve stem to seal the housing from the interior of thecontainer prior to the movement of the rst valve means out of sealingrelation thereby controlling the uid to dispense only the measured tluidtrapped in the valve housing, said stem having means to by-pass saidsecond valve means when moved to an innermost lling position wherebypressure lling l of the container can be achieved.

10. Valve means for controlling the discharge of a measured amount offluid under pressure from a container comprising a tubular valve housingon the container having a transverse apertured wall extendingthereacross to form a measuring chamber and a resilient valve diskmounted therein to seal the other end of the charnber; a valve stemslidably mounted in said housing and having an outer portion cooperatingwith the disk to control the dispensing of iluid from the chamber and aportion at the inner end passing through the apertured wall of thehousing to guide the stem against tilting; spring means within thehousing urging the stern outwardly to normal sealing position, saidhousing having a free-floating resilient washer disposed within thechamber and overlying the apertured wall, said washer having an aperturethrough which the stem passes, said spring means applying pressure tothe Washer to cause said washer to be pressed into sealing relation withthe wall and the bore into sealing relation with the stem; and passagemeans on the inner portion of the stem extending inwardly from the innerend thereof for connecting the chamber with the interior of thecontainer when the stem is in sealing position to permit uid from thecontainer to iill the chamber, movement of the stem inwardly apredetermined distance to dispensing position causing the means on thestem to be moved into sealing relation with the washer to prevent huidentering the chamber from the container and causing iluid to bedischarged from the chamber, said stem having a longitudinally extendingby-pass passage disposed inwardly of the passage in the inner portion ofthe stem and of a length greater than the thickness of the washer to bedisposed in the bore in the washer when the stem is moved inwardly fromdispensing position to lling position whereby the container can bepressure lled.

l1. Valve means for controlling the discharge of fluid under pressurefrom a container comprising a tubular valve housing having a transversewall at the in-ner end having an aperture to communicate with thecontainer and a resilient Valve disk having a cylindrical bore mountedat the outer end of the housing, means for mounting said housing on thecontainer, a valve plunger stem mounted in said housing for solelysliding movement and against tilting and having a top cylindricalportion slidable in said bore in the valve disk and projecting from thecontainer, the wall of said bore yieldably gripping said cylindricalportion to form a seal therewith, said plunger having an enlargedportion at the inner end of said cylindrical portion adapted to engagethe undersurface of the valve disk, and means urging the enlargedportion of the plunger into engagement with the valve disk to provide asecond seal for the container, said plunger having a longitudinalpassage in the cylindrical portion communicating with an outlet lateralpassage, the outer end of the longitudinal passage forming the dischargeopening and the lateral passage being normally located adjacent thevalve disk, whereby longitudinal movement of said plunger stem againstthe urging means from normal sealing position to a discharge positioncauses said enlarged portion of the plunger to be moved out ofengagement with the valve disk and said lateral passage to be moved intocommunication with an interior reservoir chamber disposed in the valvehousing to dispense the fluid under pressure therefrom, said plungerhaving a bottom cylindrical portion having a longitudinal passagecommunicating with a bottom lateral inlet passage, the outer end of thebottom longitudinal passage form-ing the inlet opening in the plungercommunicating continuously with the liquid of the container, the bottominlet lateral passage being normally in communication with the reservoirchamber.

l2. Valve means for controlling the discharge of fluid under pressurefrom a container comprising a tubular valve housing having a reservoirchamber and having an enlarged disk-receiving collar at one end thereofand a transverse wall at the other end having an aperture to communicatewith the container, a combined resilient sealing gasket and valve diskhaving a cylindrical bore mounted in said collar, a Valve plungermounted in said housing and having a top cylindrical portion slidable insaid bore in the disk so as to project from the container, the walls ofsaid bore yieldably gripping said cylindrical portion to form a sealtherewith, an enlarged middle section at the inner end of said topcylindrical portion of said plunger having an outer diameter greaterthan that of the bore of the Valve disk and a bottom cylindrical portionof reduced diameter therebelow and passing through the aperturedtransverse wall of the housing, the apertures in the housing and valvedisk holding the plunger against tilting movement, and spring meansurging the middle section of the plunger into engagement with the valvedisk whereby the valve disk is compressed between the plunger middlesection and the collar to provide a gas tight seal therebetween, saidplunger having a longitudinal conduit in said top cylindrical portioncommunicating with a top lateral passage normally located adjacent theValve disk and further having a longitudinal conduit in said ybottomcylindrical portion communicating with the bottom lateral passagenormally in communication with the reservoir chamber, wherebylongitudinal movement of said plunger against the urging means fromnormal sealing position to a discharge position causes said plungermiddle section to be moved out of engagement with the valve disk andsaid top lateral passage to be moved into communication with thereservoir chamber of the valve housing.

13. The Valve means of claim l2 comprising an apertured bottom sealerring disposed on said wall through the aperture of which the bottomcylindrical plunger portion passes in seal-tight relationship wherebymovement of said plunger rst seals off the bottom lateral passage fromcontact with said chamber prior to electing communication of the toplateral passage.

References Cited in the le of this patent f UNITED STATES PATENTS 2,658,7 14

